Rumsey In statistics, you can easily find probabilities for a sample mean if it has a normal distribution. I hope someone can show me. Advanced Search Forum Statistics Help Probability Could someone please help? You can only upload files of type 3GP, 3GPP, MP4, MOV, AVI, MPG, MPEG, or RM.

What have you done with the -2.53? cant figure this problem out. You can only upload a photo (png, jpg, jpeg) or a video (3gp, 3gpp, mp4, mov, avi, mpg, mpeg, rm). Working...

Yes that makes a lot of sense. The method of sampling, called "sample design", can greatly affect the size of the sampling error. ExcelIsFun 10,449 views 5:52 Excel 2010 Statistics 68: Construct Sampling Distribution Of Samples Means (Xbar) - Duration: 27:00. Sign in to make your opinion count.

Even if it doesn't have a normal distribution, or the distribution is not known, you can find probabilities if the sample size, n, is large enough. Other Although focused on health care, DSS has conducted market research in a wide array of industries. Loading... Join the discussion today by registering your FREE account.

Rumsey When you report the results of a statistical survey, you need to include the margin of error. statslectures 66,594 views 3:56 Statistics Sampling - Duration: 7:04. Loading... ExcelIsFun 12,293 views 8:29 Excel Statistics 68: Normal (Bell) & Standard Normal Characteristics - Duration: 13:40.

The time now is 01:14 PM. This approach offers complete control of quality, timing and cost. Reply With Quote 04-14-201208:30 PM #9 Dason View Profile View Forum Posts Visit Homepage Beep Awards: Location Ames, IA Posts 12,592 Thanks 297 Thanked 2,544 Times in 2,170 Posts Re: Could it's not homework, I printed off the "pre test" problems to work on then to prepare for the exam.

Tweet Welcome to Talk Stats! Scores on an apptitude test are normally distributed with a mean of 220 and a standard deviation of 30. LinkedIn Please follow us: Read More... If one of the survey objectives is to look at sub-populations or measure rare events, then a larger sample will be needed.

tcurdan123 35,944 views 3:09 Statistics: Using Excel to Calculate Sample Means (Sampling Distribution) - Duration: 12:36. The area between each z* value and the negative of that z* value is the confidence percentage (approximately). Transcript The interactive transcript could not be loaded. If you are unsure what amount to put here, leave it blank.

How do you find probabilities for if X is not normal, or unknown? Does this help you?” Reply With Quote + Reply to Thread Tweet « Craps Probability | Expected time until absorption in a Markov chain with two absorbing states » Use the NORM.DIST and NORM.S.DIST Functions to calculate the probability that a sample mean will occur within a given margin of errorThis is for the Highline Community College Busn 210 Statistical Once a study has been conducted, the Sampling Error calculator will indicate...

KhanAcademyEspanol 11,884 views 15:05 Statistics: Sample vs. Contact Us Fort Worth, TX Office: 4150 International Plaza, Suite 900 Fort Worth, TX 76109 Toll Free: 800.989.5150 Phone: 817.665.7000 Fax: 817.665.7001 Washington, DC Office: 2111 Wilson Blvd, Suite 700 Arlington, Join Today! + Reply to Thread Results 1 to 4 of 4 Thread: Indicated probability or percentage of sampling error Thread Tools Show Printable Version Email this Page… Subscribe to this Join Today! + Reply to Thread Results 1 to 13 of 13 Thread: Could someone please help?

Read More... What I did was look up 2.53 on the table and it was 0.9943. Multiply the sample proportion by Divide the result by n. Powered by vBulletin™ Version 4.1.3 Copyright © 2016 vBulletin Solutions, Inc.

Loading... need help please. Medicare CAHPS (this is a new program and we became fully approved in 2011). It is not subject to the Government of Canada Web Standards and has not been altered or updated since it was archived.

For example, polls that try to predict voting patterns are taken from sample sizes ranging from 1,000 to 2,000people, with samples of about 1,000people being the most common. J Douglas Jefferys 2,181,605 views 7:19 Loading more suggestions... For example, suppose X is the time it takes a randomly chosen clerical worker in an office to type and send a standard letter of recommendation. Brandon Foltz 68,790 views 32:03 What is a "Standard Deviation?" and where does that formula come from - Duration: 17:26.

Close Yeah, keep it Undo Close This video is unavailable. Add to Want to watch this again later? It is always difficult to read. (I was reading it wrong.) what is the probability that the sampling error…. The sample proportion is the number in the sample with the characteristic of interest, divided by n.

Many surveys involve a complex sample design that often leads to more sampling error than a simple random sample design. So it is about the absolute error. R Backman 6,922 views 4:42 Sampling Methods and Bias - Duration: 13:08. Probability of sampling error?

Loading... Sample size calculators allow researchers to determine the sample size needed on a study whether... Adam Hall 39,797 views 13:08 Sampling Errors - Duration: 4:04. To be 99% confident, you add and subtract 2.58 standard errors. (This assumes a normal distribution on large n; standard deviation known.) However, if you use a larger confidence percentage, then

Resources by Course Topic Review Sessions Central! Probability of sampling error? Expand» Details Details Existing questions More Tell us some more Upload in Progress Upload failed. P(Z<= 1.645) = P(Z<= 1.96) = Does these numbers look familiar?

Home | About Us | Solutions | Industries | Knowledge Center | News | Careers | Contact Us | Sitemap Request Info| Privacy Policy © 2016 Decision Support Systems, LP. Search Course Materials Faculty login (PSU Access Account) Lessons Lesson 0: Statistics: The â€œBig Pictureâ€ Lesson 1: Gathering Data Lesson 2: Turning Data Into Information Lesson 3: Probability - 1 Variable